通过AlphaFold蛋白质组建模型揭示了菌体中类似菌体的GAF折叠
Isaac Meza-Padilla1, Andrew C Doxey1, Jozef I Nissimov1
1Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada.
Computational and structural biotechnology journal
|October 2, 2025
概括
研究人员在使用AlphaFold.在菌体中发现了新型病毒蛋白,蓝菌状GAF折叠 (CGFs),菌体使用AlphaFold. 这些可能从宿主获得的病毒性CGFs可能与宿主膜相互作用,为水生环境中病毒与宿主相互作用提供了新的见解.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 生物信息学是一种生物信息学.
背景情况:
- 准确的蛋白质结构预测和同质检测对于注释病毒基因至关重要.
- 菌染色体 (CBCRs) 是菌中的重要光受体,调节各种细胞过程.
- 淡水蓝菌,病毒感染蓝菌,代表水生生态系统的重要组成部分.
研究的目的:
- 识别和功能性注释蓝动物CRV-01T基因组中的新型病毒蛋白.
- 研究新发现的病毒蛋白结构的进化起源和潜在功能.
- 探索这些蛋白质在多样化的菌体种群中的患病率和特征.
主要方法:
- 使用AlphaFold进行CrV-01T基因组的蛋白质组建.
- 对已知的蛋白质数据库进行结构同质性搜索.
- 进行了遗传学分析,以推断进化关系.
- 使用实验确定的CBCR结构查询了大奇幻病毒数据库.
主要成果:
- 在CrV-01T基因组中鉴定出一种神秘的病毒蛋白质,具有类似菌染色体的GAF折叠 (CGF).
- 遗传学分析表明,CGF蛋白质是从蓝藻细菌宿主中获得的.
- 在各种细菌体中发现了CGF蛋白,其中一些具有保存的GAF域.
- 病毒CGF蛋白通常具有N端的跨膜螺旋,表明宿主膜协会.
结论:
- 结构同质性检测,特别是AlphaFold,对于病毒基因组注释至关重要.
- 病毒CGF蛋白代表一种新型的病毒蛋白类,在操纵蓝藻细菌代谢方面具有潜在的作用.
- 这些发现扩大了我们对病毒多样性的理解,以及水中病毒圈尚未探索的"暗物质".
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